Controlling intensity and phase of terahertz radiation with an optically thin liquid crystal-loaded metamaterial

Controlling intensity and phase of terahertz radiation with an optically thin liquid crystal-loaded metamaterial

We experimentally demonstrate intensity and phase modulation of terahertz radiation using an actively controlled large-area planar metamaterial (metafilm) hybridized with a 12 μm thick layer of a liquid crystal. Active control was introduced through in-plane electrical switching of the liquid crysta...

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Veröffentlicht in:Applied physics letters 2013-09, Vol.103 (14)
Hauptverfasser: Buchnev, O., Wallauer, J., Walther, M., Kaczmarek, M., Zheludev, N. I., Fedotov, V. A.
Format: Artikel
Sprache:eng
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Zusammenfassung:We experimentally demonstrate intensity and phase modulation of terahertz radiation using an actively controlled large-area planar metamaterial (metafilm) hybridized with a 12 μm thick layer of a liquid crystal. Active control was introduced through in-plane electrical switching of the liquid crystal, which enabled to achieve a reversible single-pass absolute transmission change of 20% and a phase change of 40° at only 20 V.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4823822